[ntp:questions] YEA! My Sure Electronics GPS just arrived.
g8kbv at uko2.co.uk
Mon Mar 26 09:00:03 UTC 2012
In article <4F6D3E94.4080902 at c3energy.com>,
timekeepingntplist at c3energy.com says...
> Hi all,
> I just discovered an interesting thing about the Sure board's serial -
> USB converter. I went ahead and installed the driver. With this serial
> - USB converter, which is a Silicon Labs CP210x chipset, no matter which
> USB port I plug it into, it becomes COM6, which was the next one
> available. With the Prolific based devices, including the TU-S9 and the
> BU-353, each subsequent USB port I plug into becomes a new com port, so
> those devices became COM3, COM4, and COM5 respectively as I plugged them
> into succeeding USB ports. I can see pros and cons either way.
> With the Prolific way, if I move the device to a different port, I have
> to have a different setup in the ntp.conf file, although you could
> probably have multiple setups, and if nothing is attached to a given
> port, then it gets ignored.
> With the Silicon Labs way, I only have to have one set of configuration
> options in ntp.conf. However, what happens if I plug in another device
> with the same chipset? I'm assuming the next one will become COM7.
> But, now, if I unplug both and plug them back into the same ports, but
> in the opposite sequence, I'll bet the original 1st device will now be
> COM7 and the original 2nd device will be COM6. I can see how this would
> cause some problems.
> I have not tested yet whether this board's USB port has a built in
> driver in Linux.
Ron. To "fix" wandering com ports in Windows, take a look at:-
(or:- http://preview.tinyurl.com/8592zvp Goes to the same site above.)
Hope that helps a bit. Maybe there are similar tweaks in Linux?
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